MET 1010: Chapter Eight

Net convergence of air would cause surface pressure to ______ and net divergence would cause surface pressure to ______.

If the earth's gravitational force were to increase, atmospheric pressure at the ground would:

The surface pressures at the bases of warm and cold columns of air are equal. Which of the following statements is NOT correct?

The surface pressures at the bases of warm and cold columns of air are equal. Air pressure in the warm column of air will ______ with increasing height ______ than in the cold column.

Suppose a parcel of air has a given temperature, pressure, and density. If the parcel's size remains the same while its temperature increases, then the air pressure inside the parcel will:

Suppose a very cold parcel of air at 5.5 km (8,000 feet) is compared to a similar (but warm) parcel of air at sea level. Which of the following would be true?

If two air parcels at sea level have the same size but different temperatures, the colder parcel of air will have:

Which of the following relationships best describes the gas law?

If surface air pressure decreases, the height of the column in a mercury barometer would:

If the outside air temperature is is 27°C and the air density is .2 kg/m3, the outside air pressure would be:

The scale on a altimeter indicates altitude, but an altimeter actually measures:

A barograph will:

The unit of pressure most commonly found of a surface weather map is:

If a liquid with a lower density than mercury were used in a barometer, the height of the column in the barometer would:

An aneroid barometer works on the principle that:

Which of the following instruments measures pressure?

An aneroid barometer carried from sea level to the top of a 300 m (1,000 ft) hill would indicate:

The mercury barometer was invented by:

To obtain the station pressure you must normally make corrections for:

A station at an altitude of 900 m (about 3,000 feet) above sea level measure an air pressure of 930 mb. Under normal conditions, which of the values below do you think would be the most realistic sea level pressure for this station?

Suppose a station at sea level measures an air pressure of 1020 mb. Under standard conditions, what would be the most likely air pressure at an elevation of 600 m (about 2,000 feet) above this station?

To correctly monitor horizontal changes in air pressure, the most important correction for a mercury barometer is the correction for:

The surface weather map is a sea level chart. Thus, a surface weather map is also called:

Lines connecting points of equal pressure are called:

Pressure changes:

On a weather map, ridges are:

Which of the following expresses the gas law?

According to the gas law, when temperature remans constant, which of the following is TRUE?

Suppose you are a pilot who is flying from warm air into colder air. In the cold air, even though your altimeter is still indicating the same altitude as it did in the warm air, you would be flying:

On an isobaric surface,

Low ______ on a constant height chart corresponds to low ______ on a constant pressure chart.

On a 500 millibar chart, ______ are drawn to represent horizontal changes in altitude which correspond to horizontal changes in pressure.

The contour lines drawn on a 500 mb chart are lines of constant:

If an airplane flies from standard temperature air into warmer than standard temperature air, without making any correction, the altimeter in the warmer air would indicate an altitude:

Warm air aloft is associated with constant pressure surfaces that are found at ______ altitudes than normal and ______ than normal atmospheric pressure aloft.

On an upper-level chart, normally we find warm air associated with ______ pressure, and cold air associated with ______ pressure.

A surface low pressure center is generally associated with ______ on an upper-level isobaric chart.

On an upper-level chart wind tends to blow:

A ridge on an upper-level isobaric chart indicates:

On an isobaric weather chart, the spacing of the height contours indicates the magnitude of the pressure gradient force.

Newton's first law states,

During a reversible adiabatic process, the pressure gradient force is parallel to the isobars.

The Coriolis force is the force that causes wind to blow.

The hydrostatic equation describes the equilibrium between the:

Why is there a minus sign in the hydrostatic equation?

The fundamental laws of motion were formulated by:

The "force exerted on an object equals its mass times the acceleration produced" is a description of:

Which of the following forces does not have a direct effect on horizontal wind motions?

Which of the following can influence wind direction?

Which of the following CANNOT act to change the speed of wind?

The net force on air moving in a circle at constant speed is:

The amount of pressure change that occurs over a given horizontal distance is called the:

Which of the statements is NOT correct concerning the pressure gradient force?

The pressure gradient force is directed from higher pressure toward lower pressure:

The force that would cause a stationary parcel of air to begin to move horizontally is called:

Which of the following produces the strongest Coriolis force?

The ______ is an apparent force created by the earth's rotation.

The rate of the earth's rotation determines the strength of the:

The Coriolis force is the result of:

Which of the statements below is NOT correct concerning the Coriolis force?

If the earth stopped rotating which of the following would NOT be true?

A wind blowing at constant speed parallel to straight line isobars with the pressure gradient force (PGF) and the Coriolis force in balance is called a:

The net force acting on air, which is blowing parallel to straight contours at constant speed is:

Suppose that the winds aloft are geostrophic and blowing from the north. Low pressure is located to the:

Suppose that the winds aloft are geostrophic and blowing from the north. With the same orientation of isobars at the surface, the winds would blow from the:

The winds aloft in the middle latitudes would not blow from the west if:

If in the Northern Hemisphere the upper level winds above you are blowing from the south, then it is a good bet that a trough of low pressure is to the ______ of you.

When the wind blows in a more or less west to east direction, the wind flow pattern is called:

A wind that blows at a constant speed parallel to curved isobars or contour lines is called a:

If directly above you at 10,000 feet the wind is blowing from the south, then it is a good bet that at 10,000 feet, the center of lowest pressure is ______ of you, while the center of highest pressure is to the ______ of you.

A wind flow pattern that takes on a more or less north-south trajectory is called:

The vertical pressure gradient force is directed:

The winds aloft in the middle latitudes of the Southern Hemisphere generally blow:

A surface LOW pressure area that moves from south to north directly east of your home would most likely produce winds that shift from:

The wind around a surface low pressure center in the Southern Hemisphere blows:

Surface winds blow across the isobars at an angle due to:

If, at your home in the Northern Hemisphere, the surface wind is blowing from the northwest then the region of lowest pressure will be to the _____ of your home.

Winds blow slightly inward:

Cyclonic flow means ______ in either the Northern or Southern Hemisphere.

Buys-Ballot's law states that, "In the Northern Hemisphere if you stand with your back to the surface wind, then turn clockwise 30°, lower pressure will be:

The wind around a surface high pressure center in the Northern Hemisphere blows:

We can generally expect the air to be ______ above areas of surface low pressure and ______ above areas of surface high pressure.

The surface air around a strengthening low pressure area normally ______, while aloft, above the system, the air normally ______.

The atmosphere around the earth would rush off into space if the vertical pressure gradient force were not balanced by:

In the vertical, the pressure gradient force points ______ and gravity points ______.

When the upward-directed pressure gradient force is in balance with the downward pull of gravity, the atmosphere is in:

If an air parcel is completely at rest which of the following forces can make the parcel begin to move?